Friday - 13
Medium
Execution time limit is 1 second
Runtime memory usage limit is 64 megabytes
In successive years from A to B to calculate the total number of critical computer days - Friday 13, that is, when 13 of the month falls on a Friday.
Input
Two positive integers A, B (1200 < A, B < 2100).
Output
The answer to the problem.
Examples
Input #1
Answer #1
Submissions 517
Acceptance rate 12%